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Microsoft Teams Quality Issue

QuantumPhys
Contributor
Contributor

Hello all,

I've got an odd issue which I'm hoping someone can offer a steer on.

I have the EE 1.6 Gb Full Fibre Busiest Home package with a Smart Hub Plus.

All seemed to be working fine until my original Smart Hub Plus failed in Jan 2025. This was attributed to a bad firmware update, and a new hub was sent out. I connected this up and again everything appeared to be ok, until colleagues at work started complaining that my video during MS Teams calls was regularly freezing. On my end, I didn't see any issues - I could see and hear everyone else fine so it came as a surprise. Setting up a test meeting that just included me, I recorded myself and when playing back immediately found that the video and audio both freeze and stutter. This is readily reproducible, although sometimes the performance is extremely bad with the video completely frozen. Strangely, this only affects the MS Teams desktop app, with connections via the web browser still being good quality.

So far, everything else seems ok - stable and fast connection (getting around 1.6 Gbps routinely).

Here's what I've tried so far:

  • Updated Teams and all drivers on laptop.
  • Direct cable connection to router with WiFi turned off and all other devices disconnected. No difference.
  • Laptop on WiFi on corporate network - absolutely fine, no surprise.
  • Laptop on WiFi in various coffee shops and on friend's home broadband - all much slower connections than mine and Teams is absolutely fine. Often extremely good.
  • Used phone as 4G hotspot - absolutely fine - extremely good video and audio.
  • Replaced the Smart Hub Plus with an old Asus router I used with a previous ISP - connected to ONT. Connects via PPPoE fine with reasonable speed (around 750 Mbps although using 2.5G port as WAN port, so a little surprised it's not faster).  Connection appears very stable and no obvious issues shown by ThinkBroadband BQM. However, Teams behaves exactly the same as with the EE router - terrible video and audio.
  • Configured Hotspot VPN on Asus router - set location to South England. Connection speed is around 100 Mbps. However, Teams now works absolutely fine. Very good audio and video. Turned off VPN - fast connection restored and Teams video and audio revert to being terrible.

This suggests to me it might be some network infrastructure issue, rather than a problem with the Smart Hub Plus or with the laptop / Teams. Could the route the traffic is following make a difference? If so, how would I go about pinpointing this? The Microsoft 365 connectivity tests don't flag up anything obvious.

After much testing to convince myself there was an issue with the connection I called EE and an engineer visited. He indicated there had been some problems with the Smart Hub Plus on fast connections, tried to run a series of tests but these didn't complete. Reason unclear. However, he was confident that the new Smart Hub Pro would resolve the issues although he wasn't allowed to issue one himself.

Engineer left, job appeared to be closed, then I got a message from OpenReach asking me to arrange a call so that equipment could be delivered. I did, got put through to EE, with the guide saying that I really should have had the Smart Hub Pro already and that he'd get one sent out, although the process for doing this was very difficult. That was almost a couple of weeks ago. Being concerned this wasn't being progressed I got back in touch - over multiple calls now, once I get past the agent telling me I've got a very fast connection and they can't see an issue or find open jobs, when they review previous notes there's a record somewhere to an order being placed, but no-one can find out what. It appears I'm now down as a new customer and something needs to be progressed by the "New IT" team, even though I've been with EE for over a year.

So, perhaps a Smart Hub Pro will be sent out, which will be good because it sounds like I'm entitled to one on my package.

However, I'm not convinced the hub itself is the issue, given that the Asus router performs similarly, except when a VPN is active.

Does anyone have any thoughts about what might be happening?

Thanks!

 

 

 

 

13 REPLIES 13
Peter_W
EE Community Support Team

Hey there @QuantumPhys.

Welcome to the EE Community, and thanks for taking the time to share so much details on what you've tested so far with this!

Did you mention to the engineer that visited that you had tested this with the Asus router already?

If you're confident doing so as well, you could also try setting up a PPPoE network on your laptop and plug directly into the ONT and test without any separate router in between.

You can find all of the settings for this here:

How Do I Use My Own Router for EE Home Broadband? | Help | EE

Peter

Thanks @Peter_W ,

The testing with my Asus router was after the engineer had left and I hadn't heard any more about the Smart Hub Pro I was expecting. When the engineer was at the house he was pretty convinced there was a router issue because his tests wouldn't complete. My impression was that the router needed to be exchanged before any more in depth investigation would be undertaken. 

Connecting the laptop directly to the ONT is a good suggestion. I'll try that next opportunity I've got and let you know what happens!

 

Hi @Peter_W,

I managed to link the laptop directly to the ONT, establish a PPPoE  connection OK and run some tests.

The Teams performance was similar to via either the EE or Asus router, perhaps slightly better, although definitely with noticeable stutter on both video and audio.

General performance test results were:

Fast.com - 520 Mbps

Speedtest.net: https://www.speedtest.net/result/17700510603 

Thinkbroadband: https://www.thinkbroadband.com/speedtest/1746549527141756555

At the end of the session I tried another call using a 4G hotspot via my phone, and as previously, the Teams call quality was excellent - very clearly superior to when using the direct connection via the ONT.

Any thoughts on what to try next, or whether this may be pointing towards where a problem may lie?

Thanks,

Andrew

JimM11
Brilliant Contributor
Brilliant Contributor

@QuantumPhys Tether your phone to the laptop and test.

Hi @JimM11 ,

Thanks for the suggestion.

Here are the results. Essentially the EE results are still poor, despite the faster connection, but various connections via my phone are all fine.

 

EE WiFi

MS Teams performance

Fast.com

Speedtest.net

Thinkbroadband.com

Poor video - blocky and freezing; audio robotic

100 Mbps

https://www.speedtest.net/result/17705557286

https://www.thinkbroadband.com/speedtest/1746648663632062255

Phone hotspot

MS Teams performance

Fast.com

Speedtest.net

Thinkbroadband.com

Excellent

26 Mbps

https://www.speedtest.net/result/17705485651

https://www.thinkbroadband.com/speedtest/1746647490302111555

Tethered to phone by USB cable

MS Teams performance

Fast.com

Speedtest.net

Thinkbroadband.com

Excellent

26 Mbps

https://www.speedtest.net/result/17705502360

https://www.thinkbroadband.com/speedtest/1746647632490500155

Tethered to phone by USB network adapter and ethernet cable

MS Teams performance

Fast.com

Speedtest.net

Thinkbroadband.com

Excellent

33 Mbps

https://www.speedtest.net/result/17705538867

https://www.thinkbroadband.com/speedtest/1746648433749945855

JimM11
Brilliant Contributor
Brilliant Contributor

@QuantumPhys As far as i can see, with the copy that you have posted and below, you have a serious upload problem and it is not going to get better until you get that fixed. Download may be ok but for teams/zoom etc the upload is just as important. Question for you do you have or are you using any kind of wi-fi booster device on the network?

"" 

General performance test results were:

Fast.com - 520 Mbps

Speedtest.net: https://www.speedtest.net/result/17700510603 

Thinkbroadband: https://www.thinkbroadband.com/speedtest/1746549527141756555

At the end of the session I tried another call using a 4G hotspot via my phone, and as previously, the Teams call quality was excellent - very clearly superior to when using the direct connection via the ONT.

Any thoughts on what to try next, or whether this may be pointing towards where a problem may lie?

Thanks, ""

JimM11
Brilliant Contributor
Brilliant Contributor

@QuantumPhys When cleared for viewing you can take a look see. Also the link below to a very detailed speed test and look closely at the details boxes for the upload side of the speed test's. There are 2 thing's that you need to do, 1. is network connect your laptop to the Pro router that you have, 2. vary the testing times to get a picture off what is going on connection wise. 3. do not care what bundle you say you have got, there is an upload issue, may not be you or your home or your connection but there is something going on around your fibre.

https://speed.cloudflare.com/

https://www.waveform.com/tools/bufferbloat

FF500 on Sky No1 at 6.30amFF500 on Sky No1 at 6.30amFF500 on Sky No2 at 6.30amFF500 on Sky No2 at 6.30am

JimM11
Brilliant Contributor
Brilliant Contributor

@QuantumPhys Two quick captures but his time on a PC with a Ethernet direct connection. Again when cleared for viewing.

FF500 on Sky No1 at 8.30amFF500 on Sky No1 at 8.30amFF500 on Sky No1 at 8.30amFF500 on Sky No1 at 8.30am

QuantumPhys
Contributor
Contributor

Hi @JimM11 - here are some outputs from tests run at different times of day. Each time the laptop is connected by Ethernet cable to the Smart Hub Plus.

1000 in the morning

QuantumPhys_0-1747338454532.png

QuantumPhys_1-1747338568723.png

QuantumPhys_2-1747338607161.png

1200 noon

QuantumPhys_3-1747338645209.png

QuantumPhys_4-1747338667960.png

QuantumPhys_5-1747338689613.png

2000 in the evening

 

QuantumPhys_6-1747338698928.png

QuantumPhys_7-1747338719636.png

QuantumPhys_8-1747338740275.png

I can't see anything obvious in these.

Teams / Zoom calls are poor quality each time.

If I use a VPN the quality is fine but because it's a corporate laptop I can only do this when the VPN client is running on my old Asus router, either with the Asus router connected to the ONT and using PPPoE or with the Asus router acting as an access point to the Smart Hub Plus. (The issues with Teams/Zoom persist when the Asus router is connected to the ONT but without the VPN running.)

I've monitored the network traffic and something strange is happening with STUN packets. I tried putting the laptop in the DMZ and also changing NAT to FullCone on the Asus router and neither makes any difference.